Exercise device



FIG. 1 is a perspective view of the exercise device;

FIG. 2 is a top plan view of the exercise device;

FIG. 3 is a bottom plan view of the exercise device;

FIG. 4 is a front elevational view of the exercise device;

FIG. 5 is a rear elevational view of the exercise device;

FIG. 6 is a right side elevational view of the exercise device; and,

FIG. 7 is a left side elevational view of the exercise device.

The broken lines illustrate portions of the exercise device which form no part of the claimed design. 

CLAIM The ornamental design for a exercise device, as shown and described. 